xlat: update BPF_* constants

xlat: update BPF_* constants

* xlat/bpf_attach_type.in (BPF_CGROUP_SYSCTL): New constant introduced
by Linux kernel commit v5.2-rc1~133^2~132^2~39^2~19.
(BPF_CGROUP_UDP4_RECVMSG, BPF_CGROUP_UDP6_RECVMSG): New constants
introduced by Linux kernel commit v5.2-rc6~33^2~44^2^2~5.
* xlat/bpf_commands.in (BPF_MAP_FREEZE): New constant introduced
by Linux kernel commit v5.2-rc1~133^2~193^2~12^2~12.
* xlat/bpf_map_flags.in (BPF_F_RDONLY_PROG, BPF_F_WRONLY_PROG): New
constants introduced by Linux kernel commit
v5.2-rc1~133^2~193^2~12^2~13.
* xlat/bpf_map_types.in (BPF_MAP_TYPE_SK_STORAGE): New constant
introduced by Linux kernel commit v5.2-rc1~133^2~80^2^2~6.
* xlat/bpf_prog_types.in (BPF_PROG_TYPE_CGROUP_SYSCTL): New constant
introduced by Linux kernel commit v5.2-rc1~133^2~132^2~39^2~19.
(BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE): New constant introduced
by Linux kernel commit v5.2-rc1~133^2~80^2~1^2~4.
* NEWS: Mention this.
* tests/bpf.c (BPF_MAP_CREATE_checks, BPF_PROG_LOAD_checks,
BPF_PROG_QUERY_checks): Update.
* tests/kernel_version.c (print_bpf_attr): Update.